<template>
    <div class="app-container">
        <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch"
            label-width="68px">
            <el-form-item label="" prop="name">
                <el-input v-model="queryParams.name" placeholder="请输入栏目名称" clearable
                    @keyup.enter.native="handleQuery" />
            </el-form-item>
            <el-form-item label="" prop="status">
                <el-select v-model="queryParams.status" placeholder="请选择状态" clearable>
                    <el-option v-for="dict in dict.type.sys_used_status" :key="dict.value" :label="dict.label"
                        :value="dict.value" />
                </el-select>
            </el-form-item>
            <el-form-item label="" prop="type">
                <el-select v-model="queryParams.type" placeholder="请选择类型" clearable>
                    <el-option v-for="dict in dict.type.cms_category_type" :key="dict.value" :label="dict.label"
                        :value="dict.value" />
                </el-select>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
                <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
            </el-form-item>
        </el-form>

        <el-row :gutter="10" class="mb8">
            <el-col :span="1.5">
                <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd"
                    v-hasPermi="['cms:category:add']">新增</el-button>
            </el-col>
            <el-col :span="1.5">
                <el-button type="info" plain icon="el-icon-sort" size="mini" @click="toggleExpandAll">展开/折叠</el-button>
            </el-col>
            <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
        </el-row>

        <el-table v-if="refreshTable" v-loading="loading" :data="categoryList" row-key="id"
            :default-expand-all="isExpandAll" :tree-props="{ children: 'children', hasChildren: 'hasChildren' }">
            <el-table-column label="栏目名称" align="center" prop="name" />
            <el-table-column label="栏目图片" align="center" prop="imageUrl" width="100">
                <template slot-scope="scope">
                    <image-preview :src="scope.row.imageUrl" :width="50" :height="50" />
                </template>
            </el-table-column>
            <el-table-column label="类型" align="center" prop="type">
                <template slot-scope="scope">
                    <dict-tag :options="dict.type.cms_category_type" :value="scope.row.type" />
                </template>
            </el-table-column>
            <el-table-column label="简介" align="center" prop="remark" />
            <el-table-column label="状态" align="center" prop="status">
                <template slot-scope="scope">
                    <dict-tag :options="dict.type.sys_used_status" :value="scope.row.status" />
                </template>
            </el-table-column>
            <el-table-column label="显示顺序" align="center" prop="orderNum" />
            <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
                <template slot-scope="scope">
                    <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)"
                        v-hasPermi="['cms:category:edit']">修改</el-button>
                    <el-button size="mini" type="text" icon="el-icon-plus" @click="handleAdd(scope.row)"
                        v-hasPermi="['cms:category:add']">新增</el-button>
                    <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)"
                        v-hasPermi="['cms:category:remove']">删除</el-button>
                </template>
            </el-table-column>
        </el-table>

        <!-- 添加或修改栏目管理对话框 -->
        <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
            <el-form ref="form" :model="form" :rules="rules" label-width="80px">
                <el-form-item label="类型" prop="type">
                    <el-select v-model="form.type" placeholder="请选择类型">
                        <el-option v-for="dict in dict.type.cms_category_type" :key="dict.value" :label="dict.label"
                            :value="parseInt(dict.value)"></el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="父栏目" prop="parentId">
                    <treeselect v-model="form.parentId" :options="categoryOptions" :normalizer="normalizer"
                        placeholder="请选择父栏目" />
                </el-form-item>
                <el-form-item label="栏目名称" prop="name">
                    <el-input v-model="form.name" placeholder="请输入栏目名称" />
                </el-form-item>
                <el-form-item label="栏目图片" prop="imageUrl">
                    <image-upload v-model="form.imageUrl" :limit="1"/>
                </el-form-item>
                <el-form-item label="简介" prop="remark">
                    <el-input v-model="form.remark" type="textarea" placeholder="请输入内容" />
                </el-form-item>
                <el-form-item label="状态" prop="status">
                    <el-radio-group v-model="form.status">
                        <el-radio v-for="dict in dict.type.sys_used_status" :key="dict.value" :label="dict.value">{{
                            dict.label }}</el-radio>
                    </el-radio-group>
                </el-form-item>
                <el-form-item label="显示顺序" prop="orderNum">
                    <el-input v-model="form.orderNum" placeholder="请输入显示顺序" />
                </el-form-item>
            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button type="primary" @click="submitForm">确 定</el-button>
                <el-button @click="cancel">取 消</el-button>
            </div>
        </el-dialog>
    </div>
</template>

<script>
import { listCategory, getCategory, delCategory, addCategory, updateCategory } from "@/api/cms/category";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";
import { status } from "nprogress";

export default {
    name: "Category",
    dicts: ['sys_used_status', 'cms_category_type'],
    components: {
        Treeselect
    },
    data () {
        return {
            // 遮罩层
            loading: true,
            // 显示搜索条件
            showSearch: true,
            // 栏目管理表格数据
            categoryList: [],
            // 栏目管理树选项
            categoryOptions: [],
            // 弹出层标题
            title: "",
            // 是否显示弹出层
            open: false,
            // 是否展开，默认全部展开
            isExpandAll: true,
            // 重新渲染表格状态
            refreshTable: true,
            // 查询参数
            queryParams: {
                name: null,
                status: null,
                type: null,
            },
            // 表单参数
            form: {
                status: 1
            },
            // 表单校验
            rules: {
                name: [
                    { required: true, message: "栏目名称不能为空", trigger: "blur" }
                ],
                status: [
                    { required: true, message: "状态不能为空", trigger: "change" }
                ],
                type: [
                    { required: true, message: "类型不能为空", trigger: "change" }
                ],
                imageUrl: [
                    { required: true, message: "图片不能为空", trigger: "blur" }
                ],
            }
        };
    },
    created () {
        this.getList();
    },
    methods: {
        /** 查询栏目管理列表 */
        getList () {
            this.loading = true;
            listCategory(this.queryParams).then(response => {
                this.categoryList = this.handleTree(response.data, "id", "parentId");
                this.loading = false;
            });
        },
        /** 转换栏目管理数据结构 */
        normalizer (node) {
            if (node.children && !node.children.length) {
                delete node.children;
            }
            return {
                id: node.id,
                label: node.name,
                children: node.children
            };
        },
        /** 查询栏目管理下拉树结构 */
        getTreeselect () {
            listCategory().then(response => {
                this.categoryOptions = [];
                const data = { id: 0, name: '顶级节点', children: [] };
                data.children = this.handleTree(response.data, "id", "parentId");
                this.categoryOptions.push(data);
            });
        },
        // 取消按钮
        cancel () {
            this.open = false;
            this.reset();
        },
        // 表单重置
        reset () {
            this.form = {
                id: null,
                parentId: null,
                name: null,
                imageUrl: null,
                orderNum: null,
                status: "1",
                type: null,
                createBy: null,
                createTime: null,
                updateBy: null,
                updateTime: null,
                remark: null
            };
            this.resetForm("form");
        },
        /** 搜索按钮操作 */
        handleQuery () {
            this.getList();
        },
        /** 重置按钮操作 */
        resetQuery () {
            this.resetForm("queryForm");
            this.handleQuery();
        },
        /** 新增按钮操作 */
        handleAdd (row) {
            this.reset();
            this.getTreeselect();
            if (row != null && row.id) {
                this.form.parentId = row.id;
            } else {
                this.form.parentId = 0;
            }
            this.open = true;
            this.title = "添加栏目管理";
        },
        /** 展开/折叠操作 */
        toggleExpandAll () {
            this.refreshTable = false;
            this.isExpandAll = !this.isExpandAll;
            this.$nextTick(() => {
                this.refreshTable = true;
            });
        },
        /** 修改按钮操作 */
        handleUpdate (row) {
            this.reset();
            this.getTreeselect();
            if (row != null) {
                this.form.parentId = row.parentId;
            }
            getCategory(row.id).then(response => {
                this.form = response.data;
                this.open = true;
                this.title = "修改栏目管理";
            });
        },
        /** 提交按钮 */
        submitForm () {
            this.$refs["form"].validate(valid => {
                if (valid) {
                    if (this.form.id != null) {
                        updateCategory(this.form).then(response => {
                            this.$modal.msgSuccess("修改成功");
                            this.open = false;
                            this.getList();
                        });
                    } else {
                        addCategory(this.form).then(response => {
                            this.$modal.msgSuccess("新增成功");
                            this.open = false;
                            this.getList();
                        });
                    }
                }
            });
        },
        /** 删除按钮操作 */
        handleDelete (row) {
            this.$modal.confirm('是否确认删除栏目管理编号为"' + row.id + '"的数据项？').then(function () {
                return delCategory(row.id);
            }).then(() => {
                this.getList();
                this.$modal.msgSuccess("删除成功");
            }).catch(() => { });
        }
    }
};
</script>